vetiverPronunciation: /ˈvɛtɪvə/ (also vetivert)Definition of vetiver noun [mass noun] a fragrant extract or essential oil obtained from the root of an Indian grass, used in perfumery and aromatherapy. The grass is Vetiveria zizanioides, family Gramineae Origin: mid 19th century: from French vétiver, from Tamil veṭṭivēr, from vēr 'root'vetiver in other Oxford dictionaries Definition of vetiver in the US English dictionary